.content_4{
    width: 100%;
    height: 695px;
    background: white;
}
.content_4_box{
    margin: 0 auto;
    width: 1200px;
    height: 695px;
    text-align: center;
    color: black;
    overflow: hidden;
}
.content_4_box>h2{
    margin: 83px auto 30px ;
    font-size: 24px;
}
.content_4_box_bot{
    height: 440px;
    width: 100%;
}
.content_4_con{
    width: 33%;
    height: 220px;
    float: left;
    text-align: center;
}
.content_4_con_pic{
    width: 75px ;
    height: 75px;
    overflow: hidden;
    margin: 50px auto 0;
    position: relative;
}
.content_4_con_pic>img{
    width: 75px;
    position: absolute;
    top: 0;
    left: 0;
}
.content_4_con>h2{
    margin-top: 20px;
    font-size: 21px;
    margin-bottom: 10px;
}
.content_4_con>ul>li{
    display: inline-block;
    color: gainsboro;
    font-size: 15px;
    text-underline: none;
    line-height: 18px;
}